His first novel, was released in 1887 and was a passionate expose of the injustices of Spanish authority in the Philippines.

He challenges their prevalent beliefs and makes a crucial step toward intellectual decolonization.

“Piping Dilat”, and “Dolores Manapat” are some of his pen names.

He was a Filipino patriot, physician, and writer who was an inspiration to the Philippine nationalist movement.

He founded the first labor organization, Union Obrera Democratica Filipina, and started strikes against American corporations.

He was a Filipino historian who belonged to the country's socialist historiography tradition.

He was also a co-founder of the first Philippine multilingual newspaper, "Diyaryong Tagalog."

He is referred to as the "Father of Philippine Folklore," "Father of Philippine Labor," and "Father of Philippine Socialism."

A self-reflective view in the study of Philippine History.

He was a social psychologist and the "Ama ng Sikolohiyang Pilipino" (Father of Filipino Psychology).

He advocated the Propaganda Movement's objectives of reforming the colonial administration, curtailing the powers and abuses of the Spanish friars, achieving equal rights for Spaniards and Filipinos, and providing Philippine representation

He believed the Philippines should be a part of Spain, that Filipinos should have the same privileges as Spaniards.

He thinks that Philippine history should be taught and appreciated through the eyes of Filipinos, and that foreign prejudices should be avoided.